Personally, if the power grid goes down I'm in pretty good shape. I have a back up generator, plenty of fuel for it, LED lanterns and flashlights, about a zillion years worth of big candles that I buy after every Christmas, Halloween, etc when they go on sale. I've got beau coup propane to heat and cook with, and plenty of fire wood for the same purposes if it comes to that. I've got battery powered short wave radios, satellite radios, and plenty of the old phones that are powered off the 20 hz signal on the phone line.
I've got enough food to ride out the second flood, medical supplies, clothing, tools, arms, ammunition, and a diesel powered truck that runs off the same fuel the generator does.
I might not be as comfortable without the grid, but to be honest I don't think it would be that horrific on my end. Yes, I'd have to wash clothes in a tin tub with a scrub board, but I already have those. Plenty of soap, too. I'd have to heat water on the stove, but I've got a big kettle for doing so if I need to go that route.
I've got kerosene lanterns, and 50 gallons of kerosene, not to mention cases of "lamp oil" that I buy when it's on sale. I recently stocked up on dog food, cat food, and ferret food. I can't remember what happened that made me go get additional supplies but something motivated me to do so. I have enough cracked corn to last the chickens til spring.